11.24: Two wave pulses travel t(iyk6zk9m*,fr a cbny+32 y;2guy xydo the right toward a rigid boundary as shown. After reflection of ygyimuy6a(dyf,y; 22 ckx 3 rkb*9n+zthe triangular pulse, the pulses will interfere. Which one of the following pictures best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air and strifom fonlldhv; n;xg, +w u89pu, 8y42jkes the surface of a plastic block. Which pair of statements correctly describes the phase changes for the reflenf8+wmluxgd9 o,u lhj8v,yf; ;n2p o4cted wave and the transmitted wave?

  12.02: A ray of light passes straight downward throughjx;6nszgnevwe) * f/* the point labeled B in the diagram shown. The ray reaches a flat mirror placed at aejxzv*se *)fg /wnn 6;n angle $\Theta$ to the horizontal as shown. Which one of the locations labeled in the figure best represents the point through which the ray reflected from the mirror will pass?

  00.04: Specular reflection occurs whenever light iw c/ue (uv.ok8s incident on

  05.18: A student hold a hand mirror to observe thebcxq s +y-e0f.yc:k2l back of her head while standing in front of and looking into a wall mirror. If she is standing 4 ft in front of tkc.0 - fsy lxy:qc+b2ehe wall mirror and she holds the hand mirror 1 ft behind her head, she will see the back of her head how far behind the wall mirror?

  14.25: It is observed that gu h1/yw jb/fx o-8v18;fmua pquwp ;(a light ray changes direction when it enters a new material. Which one of the following choices is the term best a-/ uvp;yu (8;bwf/ ogp1a8jxwu1 qmhfssociated with this phenomenon?

  96.19: Light that has (wo+n5r-2ek 8tbqjm s 6mvlt/s th,f3wavelength of 500 nm in air has wavelength 400 nm in a transparent materiajk 3t/(8rqtbelto - m6v,2ws+5fh nm sl. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, both vs.a.x i 3lkifh2/ycbs+c +i) its speed and its:

  00.01: As a wave moves from one medium to a second mediu/ud(hu, :8jyvfr ph,* /xlg obm with a different index of refractp/ jhygbr8/(xuuo*h f:vld,, ion which of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork oaf53qkt vbxf1ss2+s (t l ha5-f single frequency travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which sts-vs13ltfhtksb 2 fx aa(+5q 5atement is true about the wavelength and frequency of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swi cu (dhu icd*54q-d+cli1gqv8mming pool emits a sound wave that travels toward the surface of1- h dguci4+cqq*d clvd8iu 5( the water. In the water, the sound wave has a frequency $f_{water}$, wavelength $\lambda_{water}$ , and wave speed $v_{water}$ . When the sound wave enters the air it has a frequency $f_{air}$ ,wavelength $\lambda_{air}$, and wave speed $v_{air}$ . Which one of the following relationships correctly compares the frequencies, wavelengths, and wave speeds of the waves in the air and water?

  02.33: A short burst of white light strikes a rectangular glass block with an ad;p u wk1 *h0bw+9 ia9lklq.pongidbhwqu;k +l.kp 099pa*wl1ole of incidence of $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is directed t0 6a5 g (kw+p:ffj2wsdc8znlmoward a point P on a boundary as shown to the right. Which seg zlw 608 pdfnkjfs w5g+:(2camment best represents the refracted ray?

  98.17: Which diagram best represents what happt:d6kl uzf,+xpni5 g; ens to a ray of light entering air from water? Air is at the tgfkt, p:nd+ zu;l56xiop in all diagrams.

  94.11: The critical a+rkgzi4w .;qrtj ()e nngle of a material is the angle of incidence for which the anni(jt .q+w)4;rke rzggle of refraction is:

  95.12: The principle underlying f.pzk j9 4s)oaniu 7riq5:md0*9m dywniber optics is:

  98.36: The critical angle in a transparent substance surrounded by airdu9ht:u:xf:5 .s 8 2 wecrmxmi is $30^{\circ}$. The speed of light in
the substance (in multiples of $10^8$ m/s) is most nearly

  01.28: Light travels from material X with an index of refractt, h /ie j,0d;fryon7iion of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed o7e/ri0ih ,yotd,f ;j nf light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamond avp-*m 5* bevik7v3on):aoblkc 4scu . nd a piece of glass by observing the critical angle of the light in each material. Glass with an index of refr-npko .5: kvvu*4v eai cb)7omlc*s3 baction of 1.52 has a critical angle of $41.1^{\circ}$ while a diamond with an index of refraction of 2.42 would have a critical angle of:

  05.26: Light shines from air into a clear material. a/vtd-pv g mpq7(z *y7When the light makes an angle of i *zgdtav(y7p7m q p-/vncidence equal to $30.0^{\circ}$, the light refracts at an angle of 1$5.0^{\circ}$. If the light is shone from an angle of incidence of $60.0^{\circ}$, what is the angle of refraction?

  95.40: A Metrologic laser is embedded in a materaf6dq.b n:h*elo x /-9kv*4hrw y2 yuzial of index of refraction n. The laser beam emerges from the material and hits a targeroywuvz4 *aqh2d fbk:hl6- 9/.ynx e*t. See the accompanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 to medium 3 asvd-,ttlvg xy d96ale*.4asw 4 shown in the accompanying figure. What is true about the respective indices o9,dyl.a svw t 46aldxteg-v*4f refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 as shf)vsbwp:moc3hrbm-1 m6k 2 o+own in the b+:km w-rpf36)vbmmc oh1 so2 diagram. What may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a li/s yxho1ndr(e/;orthn :4 n/eght ray takes passing through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, respectively. Which of the following best describes the r;/tno xe 4d/hnns h:y1o/rr(eelation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochromatic light ra-e2 dhr5xs -)v ndv+fmy traveling through three media.The symbolsdv2n x+5ehsfrm)dv-- $v_1$,$\lambda_1$ , and $f_1$ represent the speed, wavelength, and frequency of the light in Medium 1, respectively. Which of the following relationships for the light in the three media is true?

  99.26: A beam of light traveling jt0 8-tg.(mkwe+e5gc0tzfx c in glass ($n_g$=1.5) strikes a boundary with air ($n_a$ =1.0) at point P.The angle
of incidence is $60^{\circ}$ as shown in the diagram. Which ray would best indicate the beam’s path after point P?

  04.35: A ray of light is incident on the surface of a rectangular block8pths)e l0zw ,o r.f5f of glass at an angle oo)pt.8sfr5 lzf ,whe0 f $45^{\circ}$. It refracts into the glass and then strikes the side of the block as shown in the diagram. What would be the most likely path of the light after striking the side of the glass block?

  13.27: Light of wavelength 600nm is trawe+aeo,1r( ,fl cah-bnsmitted from air into a piece of glass. Which one of the labeled arrows best indicates the path ofeacl aew+f( -o r,1,hb the light ray after it enters the glass?

  14.44: A ray of monochromatic light ent8 r6l3g1db baters the right-triangular glass as shown. The glass has an index of refraction of 2.00 and it is surrou81bt d3a6blgr nded by air. Which one of the lettered rays shows the path of the light after it exits the glass?